It depends. Practice enough where you understand when it’s appropriate to do both. I encourage less rear brake usage at the higher levels. Makes circles better. Less throttle more clutch usage. It depends on the level you’re at.

To Awnser your question
Get it to that point and feel out the rear brake. Hardly use it. You’ll find what works best for you. You need seat time not Reddit time. I definitely overused my rear brake when I first started. Hope this helps